A quadratic model of predicting helical milling force was researched. The effects of spindle speed, feed per tooth, and axial and radial depth of cut were analyzed.

通过统计学中的响应曲面法建立了螺旋铣削过程中切削力的二阶模型，并分析了主轴转速、每齿进给量、轴向和径向切削深度等因素对切削力的影响。

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A new type of productive hob which can change the cut width and depth on each tooth of the hob is presented in this paper. It's title is turn cutting hob.

本文提出了一种通过改变滚刀每个刀齿的切削厚度与切削宽度的，新型的高生产率滚刀—轮切式齿轮滚刀。

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The gearing machine tool of the model Y3150E is modified and a new milling head is designed to cut the envelope tooth of the pinion using allelomorph method.

对Y3150E型滚齿机进行改造，设计出一新型的铣削头，利用对偶法加工小齿轮的圆弧包络线齿形；

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Lasers use a light beam to cut away tooth decay before filling cavities, resulting in less vibration and pain than traditional drills, says Barry Jacobson, a pediatric dentist at Mount Sinai Medical Center in New York.

WSJ: To Cut Tooth Decay: A Laser vs. a Drill